In the leftmost portion of the image, a 5x2.5mm Nd disc magnet is positioned approximately 150mm below the Magnaprobe & has no effect; the tilt in the detecting magnet is due to the Earth's magnetic field.

In the middle image, the magnet has been moved to with 65mm of the Magnaprobe which is responding to a field strength of about 0.5 Gauss. The right side of the image is a top view but the calipers were not completely vertical, so the Magnaprobe assembly appears more tilted than it really is.

The Mark 1 Magnaprobe is sensitive enough to will respond to even the weakest of our Permanent Magnets.

Note: Avoid contacting other magnets. If you do so by accident, detach the Magnaprobe by holding its magnet. Do not simply pull back with the handle as you will ruin the device.